Hi, On Sat, Jan 31, 2015 at 10:01 AM, Sebastien Bourdeauducq <sb@xxxxxxxxx> wrote: > Hi, > > among the many problems that the Baytrail-based Thinkpad Tablet 10 has under > Linux, the built-in Wacom digitizer does not work. I get the following > messages in the kernel log (with i2c_hid.debug=1): > > [ 593.224249] i2c_hid i2c-WCOM0008:00: Fetching the HID descriptor > [ 593.224259] i2c_hid i2c-WCOM0008:00: __i2c_hid_command: cmd=01 00 > [ 593.243080] i2c_hid i2c-WCOM0008:00: HID Descriptor: 1e 00 00 01 ee 00 02 > 00 03 00 0a 00 00 00 00 00 04 00 05 00 6a 05 14 01 02 03 00 00 00 00 > [ 593.243110] i2c_hid i2c-WCOM0008:00: Could not register for WCOM0008:00 > interrupt, irq = -1, ret = -22 That means that your tablet is the first one we (maybe only I) see that uses a GPIO as an interrupt :) Mika sent a patch recently which should solve your problem. Can you give a try to the following patch? https://patchwork.kernel.org/patch/5709961/ > [ 593.253422] i2c_hid: probe of i2c-WCOM0008:00 failed with error -22 > > What should I look at? > So if you can test the above patch, that would help. If it does not work, we will need to check the DSDT of your tablet. Cheers, Benjamin -- To unsubscribe from this list: send the line "unsubscribe linux-input" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
